Electromagnetic ore-separator.



G. RIETKUTTER.

ELECTROMAGNETIC ORE SEPARATOR. APPLICATION FILED OCT. 30, 1912. RENEWED JUNE 28,1913.

Patented Sept. 23, 1913.

' UNITED straras PATENT orrrcn.

enema nmrx'orrna, or HAGEN, GERMANY.

nnncrnorm'ennrrc oms-snrnnn'ron PatentedSept. 23, 1913.

Application filed October 30, 1912,-'Serial No. 728,664. Benewed June 26, 1913. Serial No. 775;933;

T 0 all-whom it may concern:

Be it known that I, Gnone RmTKoT'rER, a

subject of the Emperor of Germany, and resident at Hagen, Germany, have invented certain new and useful Improvements in Electromagnetic Ore-Separators.

Electro-magnetic ore-separators having a stationary system of magnets and a revolving drum-shaped casing are well-known. Furthermore, in machines of this class heretofore known, the system of magnets is arranged on a stationary shaft and the cylindrical casing is provided with independent side-disks, to one of which rotation is imparted by means of a belt or the like. This rotation is transmitted to the opposite sidedisk through the agency of the cylindrical casing, which of course must be made of rigid material, as for instance strong sheetiron or brass, iron-bars or the like. These old constructions are objectionable in that the cylindrical casing, which should be merely provided for preventing separated magnetic material from adhering directly to the magnet and for conveying said material, is moreover used for transmitting power. Therefore said cylindrical casing must be made comparatively strong and thick, whereby weakly magnetic material cannot be well separated. In other machines heretofore known, the cylindrical screen is made of thin yielding material and the side-disks of the drum are connected mechanically by means of transmission devices located outside the drum.

In contradistinction to these old constructions and arrangements my present invention has for its object to provide an improved ore-separator, wherein the side-disks ofthe drum-shaped screen are operatively connected to eachother by means of devices arranged within the drum, said disks being connected at their peripheries by means of a casing made of very thin non-rigid material and forming the drum. Therefore the cylindrical casing or screen is not used for transmitting power, one of the side-disks being actuated by means of a drive-pulley, while the other side-disk is actuated by the first disk through the agency of a suitable gearing arranged within-the'drum. Thus it will be seen that the drum may be made of i very thin andnon-rigid material, as for instance linen, paper'or the like, whereby the materials *to be separated may be brought .into the strongest zone of lines of magnetic force nearly without intermediate space, with the result, that the separator operates m a more perfect manner with a reduced consumption of current.

The accompanying drawings illustrate one form of construction of my invention.

In these drawings Figure 1.-- shows a longitudinal. section of the improved separator, and Fig. 2.- shows a cross-section ofsame. The core of the magnet 1 is provided with laterally projecting extensions 3, by means of which said magnet is secured in the wellknown manner in stationary bearings 4, setscrews 5 being provided for adjusting said magnet in the well-known manner. Current is brought to the separator through wires extending through a bore in the extension 3. Loosely arranged on the stationary extensions 3 are two side-disks 6, on which is mounted a thin drum 2 secured by clampings 13 and each of which is provided with gear-teeth 7 at its inner periphery.

Arranged on the stationary system of magnets 1, are small brackets 8, having bearings for a horizontal shaft 9, carrying two toothed pinions 10 meshing with the gearteeth 7 of the side-disk 6. Secured to the hub of one side-disk 6 is a wooden drivepulley 11, which may be arranged on the hub of the left hand or the right hand sidedisk as desired. In the form of construction illustrated by way of example in the accompanyin -drawin s the drive-pulley or one of t to side-disks 6 is driven by means of a suitable transmission. The rotation of said disk 6 is transmitted by the gear-teeth thereof and through the agency of the toothed pinions 10 to the opposite side-disk 6. The cylindrical casing 2 of the drum is made of very thin material as shown. The materials to be separated may a mediately be started again. The wearing of the cylindrical casing is without influence on the operation of the whole machine. I claim: A device .of the kind described including a frame, a shaft fixed in said frame, an opposed pair of magnets supported fixedly from said shaft, bearing brackets fixedly mounted on said shaft a second shaft journaled in said brackets, spaced disks revolubly mounted on said first mentioned shaft, internal ,w on the inner sides of said mounted on said disks and surrounding said gears and magnets. In testimony whereof I have hereunto set my hand in presence of two witnesses.

GEORG. RIETKGTTER. L4 8.] 

